A DDI is a type of highway interchange that WisDOT ... While the old cloverleaf interchange may look simpler, the new DDI design will improve traffic flow onto the interstate and increase safety ...

It’s been called Traffic Henge, Tulsa Stonehenge, the highway to nowhere and goal post plaza. Monday begins the final phase ...

Major work begins Monday to redesign the I-44 and Highway 75 interchange nicknamed “Tulsa Stonehenge” because of the empty bridge piers around the site.